api: add widget classes to runtime exclusions

runelite-api/src/main/java/net/runelite/api/widgets/ItemQuantityMode.java

@@ -28,7 +28,7 @@ package net.runelite.api.widgets;
 /**
  * Utility class mapping Widget ItemQuantityMode values
  */
-public class ItemQuantityMode
+public final class ItemQuantityMode
 {
 	/**
 	 * Never show item quantity number

runelite-api/src/main/java/net/runelite/api/widgets/WidgetConfig.java

@@ -32,7 +32,7 @@ import net.runelite.api.MenuAction;
  *
  * @see Widget#getClickMask()
  */
-public class WidgetConfig
+public final class WidgetConfig
 {
 	/**
 	 * Enables displaying a ninth option on a menu.

runelite-api/src/main/java/net/runelite/api/widgets/WidgetID.java

@@ -34,7 +34,7 @@ package net.runelite.api.widgets;
  * For a more direct group-child widget mapping, use the
  * {@link WidgetInfo} enum class.
  */
-public class WidgetID
+public final class WidgetID
 {
 	public static final int FAIRY_RING_PANEL_GROUP_ID = 381;
 	public static final int FAIRY_RING_GROUP_ID = 398;

runelite-api/src/main/java/net/runelite/api/widgets/WidgetModalMode.java

@@ -24,7 +24,7 @@
  */
 package net.runelite.api.widgets;
 
-public class WidgetModalMode
+public final class WidgetModalMode
 {
 	public static final int MODAL_NOCLICKTHROUGH = 0;
 	public static final int NON_MODAL = 1;

runelite-api/src/main/java/net/runelite/api/widgets/WidgetModelType.java

@@ -24,7 +24,7 @@
  */
 package net.runelite.api.widgets;
 
-public class WidgetModelType
+public final class WidgetModelType
 {
 	public static final int NULL = 0;
 	public static final int MODEL = 1;